5pcs A4988 Stepstick Pololu Stepper Driver Module + Heatsink For Reprap 3d Ramps

US $560

ShenZhen, China
Jun 5th

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Store Search: HOME NEW ARRIVALS ON SALE AUCTION BUY IT NOW ALL ITEMS Daily Deal Categories 5pcs A4988 StepStick Pololu Stepper Driver Module + Heatsink for RepRap 3D Ramps Description Features: Micro-step operation, the chopping control in the A4988 automatically selects the current decay mode (Slow or Mixed). In the mixed decay mode, the device is initially set to fast decay in the part of the fixed off-time, then a slow decay in the rest of the downtime. Mixed-decay current control scheme results in reduced audible motor noise, increased step accuracy, and reduced power consumption. Internal synchronous rectification control circuitry to improve the pulse-width modulation (PWM) power consumption when operating. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO) and crossover current protection. Special power-Sort. A4988 surface mount QFN package (ES), the size of 5 mm *5 mm nominal overall package height of 0.90 mm??, and with exposed pad for enhanced thermal dissipation. The package is Pb (suffixes-T), with 100% matte tin lead frame plating. Specifications: Low RDS (ON) outputs<A0~A5/li> Automatic current decay mode detection / selection Internal UVLO Mixed with slow current decay modes Synchronous rectification for low power dissipation Crossover-current protection Thermal shutdown circuitry 3.3 and 5 V compatible logic supply Thermal shutdown circuitry Ground Fault Circuit Load short-circuit protection Of five optional step mode: full, 1/2, 1/4, 1/8 and 1/16 Included Package Content: 5 x Step Stick Stepper Motor Driver Module 5 x Mini Heat Sink More Products In This Category New Arrivals What's Hot Why Shop At Our Store Payment Shipping Warranty Policies Contact Us We accept PayPal only. All major credit cards are accepted through secure payment processor PayPal. Payment must be received within 7 business days of auction closing. If you have bought multiple items from me, you can send me one payment for all the items instead of paying for them individually. When you click the Pay Now button, eBay will automatically determine if there are other items you have won or purchased from me and will combine them for your review. We Ship to Worldwide, except Italy, Nigeria, and we do not ship to APO/FPO Items will be shipped within 1 business day on payment received. Items are shipped from Hong Kong using Airmail, reach most of the countries within 10 to 20 business days. Delivery time depends on destination and other factors, it may takes up to 20 business days. 12 months Warranty. Buy with confidence! If you are not satisfied when you receive your item, please return it within 14 days for a replacement or money back. Please contact me before you return it. If item is defective in 3 months, We will send you a replacement without extra charger, or offer refund after we receive the defective item. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee. We are not responsible for any custom duty or import tax. We will leave POSITIVE FEEDBACK after receiving the payment. Please contact us if you are not satisfied with the item after receive it. All messages will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your message and we will reply to you as soon as possible. Serious Buyer Only! Please place bid only if you agree with all the terms. On Jun-05-16 at 17:56:53 PDT, seller added the following information: